16. Introduction Of Ariel Fire Apparatus Flashcards
The two most common materials for construction of aerial ladders are:
Heat-treated aluminum alloy
Steel
544
Prevent fluid from flowing backwards through a component and act as a safety feature in the event that a leak develops in the system.
Check valves
Page 549
Limit the pressure buildup in the system, thus prevent damage due to over-pressurization.
Relief valves
549
Prevent unintentional or undesirable motion of the device from it’s establish position
Counterbalance valves
549
A three-way valve that directs fluid to either the stabilizer control valves or the aerial device control valves.
Selector valve
Page 549
Capable of receiving oil under pressure from both sides of the piston so that force can be created in either direction.
Double acting cylinders
549
The working height for aerial ladders is measured from the ground to the:
Highest ladder wrong with the ladder at maximum elevation and extension.
Page 552
The working height of all types of elevated platforms is measured from the ground to:
Top surface of the highest platform handrail.
Page 558
The extension and retraction cables are usually corrosive resistant aircraft quality cables made with a very high strength steel called:
Plow steel
Page 562
Used to discharge elevated master streams for fire attack from the aerial device.
Water delivery systems
Page 566
The telescoping waterway system is also connected directly to the fire pump so that the truck may supply itself when necessary.
Quint
Page568
The operational inspection serves two purposes:
Proper working condition
Review
Page 583
